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Finding the Fourth Proportional to 62,415, 93,622.50 and 18,639

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Solution

The fourth proportional to 62,415, 93,622.50 and 18,639 is: 27,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,415 : 93,622.50 = 18,639 : x
  2. Step 2: Convert to fraction form
    62,415/93,622.50 = 18,639/x
  3. Step 3: Cross multiply
    62,415x = 93,622.50 × 18,639
  4. Step 4: Simplify right side
    62,415x = 1,745,029,777.50
  5. Step 5: Solve for x
    x = 1,745,029,777.50/62,415
  6. Step 6: Final answer
    x = 27,958.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.